Human Digestive System/Colon

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The Colon is the last part of the digestive system in most vertebrates. It extracts water and salt from solid wastes before they are eliminated from the body and is the site in which flora-aided (large bacterial) fermentation of unabsorbed material occurs. Unlike the small intestine, the colon does not play a major role in absorption of foods and nutrients. However, the colon does absorb water, sodium and some fat soluble vitamins. In mammals, the colon consists of four sections: the ascending colon, the transverse colon, the descending colon, and the sigmoid colon (the proximal colon usually refers to the ascending colon and transverse colon). The cecum, colon, rectum and anal canal make up the large intestine

What do they do?[edit]

Also with our Kidneys and other main body parts that help us with our food, our colon helps us to digest food. Here is a copy of the step by step digestive system to our bodies:

  1. Food begins in the mouth where it is chewed by the teeth into smaller pieces. The salivary glands release juices to help, and the tongue and saliva turn the food into even smaller pieces that will fit into the fit into the esophagus. The esophagus is a 10-inch-long tube that connects to the stomach. Muscles in the esophagus move food into the stomach.

2. In the stomach, gastric juices—protein substances called enzymes— break down the food into smaller bits. The stomach has powerful muscles that churn up the food until it’s a creamy liquid. This material moves into the small bowel

3. In the small bowel, the food particles get even smaller. More juices from the pancreas, liver and gallbladder mix together in the small bowel. Here is where all the important vitamins and nutrients in food moves through the blood vessels that are in the lining of the small bowel. The blood takes the nutrients to other organs in the body. The nutrients are used to help repair cells and tissue.

4. What is left over, which is mostly liquid, then moves into the colon. The water is absorbed in the colon. Bacteria in the colon break down the remaining material. Then the colon moves the leftover material into the rectum.

5. The rectum is like a storage- holder for this waste. Muscles in the rectum move the waste, called stool, out of the body through the anus.

A good summary of number 4[edit]

On number 4, this is where the colon comes in. What is left after number 3 goes down to the colon and then the liquid is absorbed into the colon. Which then, good Bavteria in the colon break down the remaining materials, could be a few solids in there. Then, the colon moves the leftovers down to the rectum. Then, it leads to your anus, where you shit it out.

Where are they?[edit]

The colon is located in the lower abdomen where it connects to the ileum

How can we protect them?[edit]

Healthy eating is good for your overall health, but having a low-calorie, high-fiber diet that includes many fruits and vegetables is important to a healthy colon. A healthy colon will rid your body of the leftovers it no longer needs. Your stool is filled with bacteria, so it is important to pass this out of your body. If your colon isn’t working the way it should, you will experience problems such as bloating, gas and pain.

Sources[edit]

  1. w:Colon, introduction paragraph, balantly copied.
  2. http://www.fascrs.org/gedownload!/colon.pdf?item_id=1300009
  3. Ask.com - Questions: Where is the colon located in the human body?, Blatantly copied.